Malicious PDF — malware analysis report

Static analysis result for SHA-256 5732dbe0749fc278…

MALICIOUS

PDF

44.5 KB Created: 2021-05-12 12:30:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: c718011e36e81160e4c949d594700c2b SHA-1: abf515519e1a2eb9a869fd110218b00114cfe618 SHA-256: 5732dbe0749fc2788cdf8415ce340b1514d6c332e97e791be75c92f801e19c19
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a large number of external links, many of which are disguised as PDF files related to game exploits and cheats. The ML classifier and heuristic firings strongly indicate malicious intent, likely to direct users to malicious websites or download further malware. The document body and extracted URLs suggest a lure for game-related cheats, which is a common tactic for distributing malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://netcdn.xyz/app/406889139/how-to-hack-coin-master-with-root-game-hack
    • http://5prudov.ru/images/roblox-free-exploits_GM431946152.pdf
    • http://5prudov.ru/images/how-to-get-free-gamepasses-on-roblox_GM431946152.pdf
    • http://5prudov.ru/images/coin-master-daily-free-spins-link-haktuts_GM406889139.pdf
    • http://5prudov.ru/images/coin-master-ids-for-free-spins_GM406889139.pdf
    • http://5prudov.ru/images/aimbot-exe-roblox_GM431946152.pdf
    • http://5prudov.ru/images/was-minecraft-ever-free_GM479516143.pdf
    • http://5prudov.ru/images/how-to-get-free-robux-without-downloading-apps_GM431946152.pdf
    • http://5prudov.ru/images/how-to-get-gold-cards-on-coin-master-hack_GM406889139.pdf
    • http://5prudov.ru/images/coin-master-free-spins-link-2021-download_GM406889139.pdf
    • http://5prudov.ru/images/how-to-get-free-robux-without-human-verification-2021_GM431946152.pdf
    • http://5prudov.ru/images/is-there-a-way-to-get-free-robux_GM431946152.pdf
    • http://5prudov.ru/images/how-to-get-free-followers-on-roblox_GM431946152.pdf
    • http://5prudov.ru/images/how-to-get-minecraft-windows-10-edition-for-free_GM479516143.pdf
    • http://5prudov.ru/images/free-robux-generator-com-roblox-hack_GM431946152.pdf
    • http://5prudov.ru/images/roblox-hack-me_GM431946152.pdf
    • http://5prudov.ru/images/how-to-get-free-robux-games_GM431946152.pdf
    • http://5prudov.ru/images/coin-master-game-free_GM406889139.pdf
    • http://5prudov.ru/images/roblox-person_GM431946152.pdf
    • http://5prudov.ru/images/free-robux-that-actually-works_GM431946152.pdf
    • http://5prudov.ru/images/get-gold-coin-master-village-hack_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000489d.bin
acf6b247fb3f6ef25fa7f2f23b08586c8eabe5eed1b3f6769a06bdb7daf72412
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x489D 25412 bytes
font_01_sfnt_off000081ad.bin
3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
pdf-font-stream PDF embedded font (sfnt) at offset 0x81AD 2840 bytes
font_02_sfnt_off00008b5e.bin
637569eb8644e62c1f2e57bc91b52f312ba00adc0fcd5632e53c8f2fa316043a
pdf-font-stream PDF embedded font (sfnt) at offset 0x8B5E 18244 bytes